Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. An electronic device on a user equipment side in a wireless communication system, comprising: circuitry configured to perform device-to-device (D2D) communication under a cellular communication protocol with a plurality of user equipment, to transmit data information and/or control information to the plurality of user equipment directly; receive first indication information indicating quality of a link between the first user equipment and the second user equipment from the first user equipment; receive second indication information indicating quality of a link between the first user equipment and a third user equipment from the first user equipment; determine whether the quality of the link between the first user equipment and the second user equipment is better than the quality of the link between the first user equipment and the third user equipment; and in a case that it is determined that the quality of the link between the first user equipment and the second user equipment is better than the quality of the link between the first user equipment and the third user equipment, determine the second user equipment as a candidate object with which the first user equipment performs the D2D communication, wherein the circuitry is further configured to: transmit switch request information indicating that the first user equipment is to perform the D2D communication with the second user equipment to a base station equipment; receive switch request acknowledgement information from the base station equipment, wherein the switch request acknowledge information contains resource allocation information for the D2D communication between the first user equipment and the second user equipment; and configure resources and a modulation and coding scheme (MCS) for performing the D2D communication between the first user equipment and the second user equipment at least based on the switch request acknowledgement information.
In wireless communication systems, direct device-to-device (D2D) communication allows user equipment (UE) to exchange data and control information without relying on a base station, improving efficiency and reducing latency. However, selecting optimal D2D communication partners based on link quality remains a challenge. This invention addresses this by enabling an electronic device in a UE to evaluate and establish D2D connections dynamically. The device includes circuitry configured to perform D2D communication under a cellular protocol with multiple UEs, transmitting data and control information directly. It receives first indication information from a first UE, reporting the link quality between the first UE and a second UE, and second indication information reporting the link quality between the first UE and a third UE. The device compares these qualities and, if the link to the second UE is better, designates the second UE as a candidate for D2D communication. The device then transmits a switch request to a base station, requesting approval to establish D2D communication with the second UE. Upon receiving a switch request acknowledgment from the base station—containing resource allocation details—the device configures the allocated resources and modulation and coding scheme (MCS) for the D2D communication between the first and second UEs. This ensures efficient and reliable direct communication based on real-time link quality assessments.
2. The electronic device according to claim 1 , wherein the circuitry is further configured to configure resources and a modulation and coding scheme (MCS) for performing the D2D communication between the first user equipment and the second user equipment by selecting resources from a predetermined D2D communication resource pool.
This invention relates to wireless communication systems, specifically device-to-device (D2D) communication in cellular networks. The problem addressed is efficient resource allocation and modulation/coding scheme (MCS) selection for D2D communication to ensure reliable and interference-free direct links between user equipment (UE) devices. The invention describes an electronic device, such as a base station or network node, with circuitry configured to manage D2D communication between two UEs. The circuitry selects communication resources from a predefined D2D resource pool, which is a set of frequency, time, or code resources reserved for D2D links. Additionally, the circuitry determines an appropriate MCS for the D2D transmission, balancing data rate and reliability based on channel conditions. The resource selection and MCS configuration are dynamically adjusted to optimize performance, minimize interference with cellular uplink/downlink transmissions, and ensure efficient spectrum utilization. The invention ensures that D2D communication operates within the constraints of the cellular network while maintaining quality of service for both D2D and cellular users. This approach enhances spectral efficiency and supports proximity-based services without overloading the network infrastructure.
3. The electronic device according to claim 1 , wherein the circuitry is further configured to: in a case that the predetermined condition is met, determine that the first user equipment performs unicasting D2D communication with the second user equipment, and receive a transmission frame number status for the first user equipment and the third user equipment from the first user equipment; and transmit the transmission frame number status to the second user equipment, wherein the first user equipment continues to receive broadcasting information of the third user equipment from the second user equipment.
This invention relates to wireless communication systems, specifically improving device-to-device (D2D) communication efficiency in scenarios where multiple user equipment (UE) devices interact. The problem addressed is ensuring reliable and synchronized communication between devices while minimizing redundant transmissions, particularly when one device broadcasts information to others. The system involves a network node that manages communication between a first UE, a second UE, and a third UE. The circuitry in the network node monitors whether a predetermined condition is met, such as a specific signal quality threshold or network load condition. When this condition is satisfied, the network node determines that the first UE is engaged in unicast D2D communication with the second UE. During this communication, the first UE sends a transmission frame number status to the network node, which includes synchronization information for both the first and third UEs. The network node then forwards this status to the second UE, allowing it to maintain synchronization with the third UE’s broadcast transmissions. This ensures that the second UE can continue receiving broadcasting information from the third UE without interruption, even while engaged in unicast communication with the first UE. The approach optimizes resource usage by avoiding redundant transmissions while maintaining communication reliability.
4. The electronic device according to claim 1 , wherein the circuitry is further configured to: configure, for the first user equipment, D2D communication connection assistance information for accessing into the second user equipment; and transmit the D2D communication connection assistance information to the first user equipment.
This invention relates to wireless communication systems, specifically improving device-to-device (D2D) communication between user equipment (UE) devices. The problem addressed is the difficulty in establishing direct D2D connections due to lack of prior knowledge or assistance information about potential peer devices. The invention involves an electronic device, such as a base station or network node, that facilitates D2D communication between a first UE and a second UE. The device includes circuitry configured to generate and provide connection assistance information to the first UE. This information helps the first UE establish a direct D2D communication link with the second UE. The assistance information may include parameters such as timing, frequency resources, or identification details needed for the connection. The circuitry transmits this information to the first UE, enabling it to initiate and maintain the D2D communication session with the second UE. The solution enhances communication efficiency by reducing setup delays and improving connection reliability in D2D scenarios.
5. The electronic device according to claim 1 , wherein the circuitry is configured to transmit the information indicating the resources and the MCS to the first user equipment and the second user equipment through an RRC (Radio Resource Control) signaling.
This invention relates to wireless communication systems, specifically improving resource allocation and modulation and coding scheme (MCS) selection for multiple user equipment (UE) devices. The problem addressed is the need for efficient and reliable transmission of resource allocation and MCS information to multiple UEs in a network, ensuring optimal data transmission performance. The invention involves an electronic device, such as a base station, with circuitry configured to allocate communication resources and select an MCS for data transmission to at least two UEs. The circuitry determines the available resources and the appropriate MCS based on factors like channel conditions, UE capabilities, and network load. The key innovation is the transmission of this information—indicating both the allocated resources and the selected MCS—to the UEs via Radio Resource Control (RRC) signaling. RRC signaling is used for higher-layer control, ensuring that the UEs receive the necessary configuration details for efficient data communication. By using RRC signaling, the system ensures that the resource allocation and MCS information is reliably delivered, reducing the risk of misconfiguration and improving overall communication efficiency. This approach is particularly useful in scenarios where multiple UEs need to be coordinated for data transmission, such as in multi-user MIMO or coordinated multipoint transmission systems. The invention enhances the flexibility and reliability of resource management in wireless networks.
6. An electronic device on a user equipment side in a wireless communication system, comprising: circuitry configured to perform device-to-device (D2D) communication under a cellular communication protocol with a plurality of user equipment, to transmit data information and/or control information to the plurality of user equipment directly; receive first indication information indicating quality of a link between the first user equipment and the second user equipment from the first user equipment; receive second indication information indicating quality of a link between the first user equipment and a third user equipment from the first user equipment; determine whether the quality of the link between the first user equipment and the second user equipment is better than the quality of the link between the first user equipment and the third user equipment; and in a case that it is determined that the quality of the link between the first user equipment and the second user equipment is better than the quality of the link between the first user equipment and the third user equipment, determine the second user equipment as a candidate object with which the first user equipment performs the D2D communication, wherein the circuitry is further configured to: configure, for the first user equipment and the second user equipment of the plurality of user equipment, resources and a modulation and coding scheme (MCS) for performing the D2D communication between the first user equipment and the second user equipment; and transmit information indicating the resources and the MCS to the first user equipment and the second user equipment.
In wireless communication systems, direct device-to-device (D2D) communication allows user equipment (UE) to exchange data and control information without relying on a central network infrastructure. This approach improves efficiency and reduces latency but requires mechanisms to manage link quality and resource allocation. The invention addresses the challenge of selecting optimal D2D communication partners and configuring resources dynamically. The electronic device on the UE side performs D2D communication under a cellular protocol, enabling direct data and control information transmission among multiple UEs. It receives link quality indications from a first UE regarding its connections to a second and third UE. By comparing these indications, the device determines whether the link between the first and second UE is superior to that between the first and third UE. If so, the second UE is designated as a candidate for D2D communication with the first UE. The device further configures communication resources and a modulation and coding scheme (MCS) for the selected pair, then transmits this configuration to both UEs. This ensures efficient and reliable D2D communication by dynamically adapting to link quality conditions. The system enhances performance by optimizing partner selection and resource allocation in real-time.
7. An electronic device on a user equipment side in a wireless communication system, comprising: circuitry configured to perform device-to-device (D2D) communication under a cellular communication protocol with a plurality of user equipment, to transmit data information and/or control information to the plurality of user equipment directly; configure, for a first user equipment and a second user equipment of the plurality of user equipment, resources and a modulation and coding scheme (MCS) for performing the D2D communication between the first user equipment and the second user equipment, the second user equipment being a candidate object with which the first user equipment performs the D2D communication; transmit information indicating the resources and the MCS to the first user equipment and the second user equipment; and receive first indication information indicating quality of a link between the first user equipment and the second user equipment from the first user equipment, wherein in a case that the quality of the link indicated by the first indication information meets a predetermined condition, the circuitry is further configured to configure the resources and the MCS for performing the D2D communication between the first user equipment and the second user equipment, the circuitry is further configured to receive second indication information indicating quality of a link between the first user equipment and a third user equipment from the first user equipment, the predetermined condition at least comprises that the quality of the link between the first user equipment and the second user equipment is better than the quality of the link between the first user equipment and the third user equipment, and the circuitry is further configured to receive information indicating that the third user equipment is a broadcasting information source for the first user equipment and the second user equipment from the first user equipment and/or the second user equipment.
In wireless communication systems, direct device-to-device (D2D) communication enables user equipment (UE) to exchange data and control information without relying on a central network infrastructure. This approach improves efficiency and reduces latency but requires careful resource management and link quality assessment. The invention addresses these challenges by implementing an electronic device on the UE side that facilitates D2D communication under a cellular protocol. The device includes circuitry configured to transmit data and control information directly to multiple UEs. It configures communication resources and modulation and coding schemes (MCS) for D2D links between a first UE and a second UE, where the second UE is a candidate for D2D communication. The device sends this configuration to both UEs and receives link quality feedback from the first UE. If the link quality between the first and second UEs meets a predetermined condition—such as being better than the link quality between the first UE and a third UE—the device reconfigures the resources and MCS for the D2D link. The system also accounts for scenarios where the third UE acts as a broadcasting information source for the first and second UEs, ensuring optimal communication paths based on real-time link quality assessments. This approach enhances D2D communication reliability and efficiency by dynamically adapting to network conditions.
8. An electronic device on a user equipment side in a wireless communication system, comprising: circuitry configured to perform device-to-device (D2D) communication under a cellular communication protocol with a plurality of user equipment, to transmit data information and/or control information to the plurality of user equipment directly; receive first indication information indicating quality of a link between the first user equipment and the second user equipment from the first user equipment; receive second indication information indicating quality of a link between the first user equipment and a third user equipment from the first user equipment; determine whether the quality of the link between the first user equipment and the second user equipment is better than the quality of the link between the first user equipment and the third user equipment; and in a case that it is determined that the quality of the link between the first user equipment and the second user equipment is better than the quality of the link between the first user equipment and the third user equipment, determine the second user equipment as a candidate object with which the first user equipment performs the D2D communication, wherein the circuitry is further configured to: configure a hybrid automatic repeat request (HARQ) for performing the D2D communication between the first user equipment and the second user equipment; and transmit HARQ configuration information to the first user equipment and the second user equipment.
The invention relates to wireless communication systems, specifically improving device-to-device (D2D) communication efficiency by dynamically selecting optimal communication links. In D2D communication, user equipment (UE) devices communicate directly with each other rather than through a base station, which can reduce latency and network congestion. However, link quality between devices can vary, leading to potential inefficiencies. The electronic device on the UE side is configured to facilitate D2D communication under a cellular communication protocol, allowing direct data and control information exchange with multiple UEs. It receives link quality reports from a first UE, including quality metrics for its connections to a second UE and a third UE. The device compares these metrics to determine which link is superior. If the link between the first and second UE is better, the second UE is selected as a candidate for D2D communication. The device then configures a hybrid automatic repeat request (HARQ) mechanism to ensure reliable data transmission between the first and second UE, sending the HARQ configuration to both devices. This dynamic selection and HARQ setup improve communication reliability and efficiency in D2D scenarios.
9. An electronic device on a user equipment side in a wireless communication system, comprising: circuitry configured to measure quality of a link between the electronic device and a second user equipment; transmit first indication information on the quality of the link between the electronic device and the second user equipment to a first user equipment; measure quality of a link between the electronic device and a third user equipment; transmit second indication information on the quality of the link between the electronic device and the third user equipment to the first user equipment; receive, from the first user equipment information indicating resources and a modulation and coding scheme MCS for performing Device-to-Device (D2D) communication under a cellular communication protocol between the electronic device and the second user equipment, in a case that it is determined by the first user equipment that the quality of the link between the electronic device and the second user equipment is better than the quality of the link between the electronic device and the third user equipment; modulate and code data to be transmitted based on the information indicating the resources and the MCS; and transmit the modulated and coded data to be transmitted to the second user equipment through the resources, to perform the D2D communication.
This invention relates to wireless communication systems, specifically improving Device-to-Device (D2D) communication efficiency by dynamically selecting optimal communication links. The problem addressed is ensuring reliable D2D communication by evaluating link quality between devices and selecting the best available path for data transmission. The electronic device on the user equipment side measures the quality of wireless links to two other user equipments (second and third). It transmits this quality information to a first user equipment, which acts as a coordinator. The first user equipment determines which link is better based on the received quality measurements. If the link to the second user equipment is superior, the first user equipment assigns resources and a modulation and coding scheme (MCS) for D2D communication between the electronic device and the second user equipment. The electronic device then modulates and codes data according to the assigned parameters and transmits it to the second user equipment using the allocated resources, completing the D2D communication. This approach optimizes data transmission by dynamically selecting the best available link, improving reliability and efficiency in D2D communication under cellular protocols.
10. The electronic device according to claim 9 , wherein the circuitry is further configured to receive, from the first user equipment, at least one of measurement configuration information for measuring quality of the link between the electronic device and the second user equipment, Hybrid Automatic Repeat Request (HARQ) configuration information for the D2D communication between the electronic device and the second user equipment, and D2D communication connection assistance information for accessing into the second user equipment.
This invention relates to electronic devices supporting device-to-device (D2D) communication, addressing challenges in managing communication links between user equipment (UE) devices. The system enables efficient D2D communication by configuring and optimizing link quality, error handling, and connection establishment. The circuitry in the electronic device is designed to receive configuration data from a first UE, including measurement parameters for assessing the link quality between the electronic device and a second UE. This allows dynamic adjustments to maintain reliable communication. Additionally, the circuitry processes Hybrid Automatic Repeat Request (HARQ) settings to improve data transmission reliability in D2D communication, ensuring robust error correction. The system also facilitates connection assistance, providing the necessary information for the electronic device to establish or maintain a D2D link with the second UE. This configuration enhances communication efficiency, reduces latency, and improves overall performance in D2D networks by dynamically adapting to varying conditions and requirements. The invention is particularly useful in scenarios where direct UE-to-UE communication is preferred over traditional network-mediated connections, such as in proximity-based services or emergency communications.
11. An electronic device on a user equipment side in a wireless communication system comprising: circuitry configured to receive, from a first user equipment, information indicating resources and a modulation and coding scheme MCS for performing Device-to-Device (D2D) communication under a cellular communication protocol between the electronic device and a second user equipment; modulate and code data to be transmitted based on the information indicating the resources and the MCS; transmit the modulated and coded data to be transmitted to the second user equipment through the resources, to perform the D2D communication; measure quality of a link between the electronic device and the second user equipment; transmit first indication information on the quality of the link between the electronic device and the second user equipment to the first user equipment; perform D2D communication with a third user equipment before performing the D2D communication with the second user equipment; measure quality of a link between the electronic device and the third user equipment; and transmit second indication information on the quality of the link between the electronic device and the third user equipment to the first user equipment.
In wireless communication systems, direct communication between user equipment (UE) devices, known as Device-to-Device (D2D) communication, can improve efficiency and reduce network congestion. However, managing D2D links under cellular protocols requires coordination to ensure reliable communication and resource allocation. This invention addresses these challenges by providing an electronic device on the UE side that facilitates D2D communication while reporting link quality to a coordinating entity. The device includes circuitry to receive resource allocation and modulation and coding scheme (MCS) information from a first UE, which acts as a coordinator. The device then modulates and codes data for transmission to a second UE using the allocated resources and MCS, enabling D2D communication. Additionally, the device measures the link quality between itself and the second UE and reports this information back to the first UE. Before communicating with the second UE, the device may also perform D2D communication with a third UE, measure the link quality of this connection, and report it to the first UE. This allows the coordinating UE to dynamically adjust resource allocation and MCS settings based on real-time link quality feedback, optimizing D2D communication performance. The system ensures efficient use of wireless resources while maintaining reliable D2D links under cellular network protocols.
12. The electronic device according to claim 11 , wherein the circuitry is further configured to: receive, from the first user equipment, at least one of measurement configuration information for measuring quality of the link between the electronic device and the second user equipment, Hybrid Automatic Repeat Request (HARQ) configuration information for the D2D communication between the electronic device and the second user equipment, and D2D communication connection assistance information for accessing into the second user equipment; transmit the D2D communication connection assistance information to the second user equipment, to access into the second user equipment; receive, from the second user equipment, an access response containing at least one of timing advance and scheduling arrangement for data to be transmitted; and after receiving the access response, transmit acknowledgement information indicating that D2D communication with the second user equipment has been established successfully to the first user equipment, and stop receiving information from the third user equipment.
This invention relates to device-to-device (D2D) communication in wireless networks, specifically addressing the establishment and management of direct links between user equipment (UE) devices. The problem solved involves efficiently setting up D2D connections while ensuring proper synchronization, resource allocation, and coordination between devices. The invention describes an electronic device configured to facilitate D2D communication between a first UE and a second UE. The device receives configuration information from the first UE, which may include measurement parameters for assessing link quality, Hybrid Automatic Repeat Request (HARQ) settings for error control, and connection assistance data for accessing the second UE. The device then transmits the connection assistance information to the second UE, enabling the first UE to establish a direct link. Upon receiving an access response from the second UE—containing timing advance and scheduling details—the device sends an acknowledgment to the first UE, confirming successful D2D communication setup. Additionally, the device stops receiving information from a third UE, indicating a transition to the new D2D link. This approach optimizes D2D communication by streamlining connection procedures, ensuring proper synchronization, and dynamically managing resources to support direct device interactions.
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November 24, 2020
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